Growth and characterization of an In0.53Ga0.47As-based Metal-Oxide-Semiconductor Capacitor (MOSCAP) structure on 300mm on-axis Si (001) wafers by MOCVD
2015
We report on the development of a metamorphic In0.53Ga0.47As-based heterostructure grown on 300 mm on-axis Si (001) wafers by metal-organic chemical vapor deposition (MOCVD), and the fabrication of a Metal-Oxide-Semiconductor Capacitor (MOSCAP) with C–V characteristics and interfacial trap density (Dit) values comparable to those of an equivalent structure grown on an InP substrate. A 1.15 µm thick GaAs/InP buffer with a defect density in the low 109 cm−2 range and a surface roughness rms value <2 nm was used to accommodate the large lattice mismatch between In0.53Ga0.47As and Si.
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